On 17.12.2010 01:09, Jeremy Shaw wrote:
Hello,
You should use happstack-data for this (you do not need the other
happstack components to use happstack-data)*. It was created to solve
this exact problem.
happstack-data builds on type of the 'binary' library and adds versioned
data types and automatic version migration.
Thanks! Looks like what I need. There is a one problem, though. I don't
have a time machine. I mean right now I have A primitive format based on
Show instance and I'd like to maintain the compatibility with it.
Is it possible to force a particular on-disk format for a particular
version of data type? I guess I should write a Serialize instance
myself. Are there any pitfalls awaiting me?
Best wishes,
Dmitry
_______________________________________________
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe
